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arXiv 1002.3658math.COmath.NT
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广义Ehrhart多项式

Generalized Ehrhart polynomials

Sheng Chen, Nan Li, Steven V Sam

摘要:

设$P$是一个有理顶点的多面体。Ehrhart的一个经典定理指出,伸缩$P(n) = nP$中的格点数目是$n$中的拟多项式。我们通过允许P(n)的顶点是$n$中的任意有理函数来推广这个定理。在这种情况下,我们证明了在P(n)的格点的数量是一个拟多项式的$n$充分大。我们的工作是出于一个猜想Ehrhart的解决方案的数量参数化线性丢番图方程的系数是多项式在$n$,我们解释了这两个问题是如何相关的。

英文摘要:

Let $P$ be a polytope with rational vertices. A classical theorem of Ehrhart states that the number of lattice points in the dilations $P(n) = nP$ is a quasi-polynomial in $n$. We generalize this theorem by allowing the vertices of P(n) to be arbitrary rational functions in $n$. In this case we prove that the number of lattice points in P(n) is a quasi-polynomial for $n$ sufficiently large. Our work was motivated by a conjecture of Ehrhart on the number of solutions to parametrized linear Diophantine equations whose coefficients are polynomials in $n$, and we explain how these two problems are related.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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